Sheet-embossing mill.



'UNITEDSSTATES PATENT oFFIoE.

VICTOR CHARTENEB., .OF IE'ITTSBURG, PENNSYLVANIA, ASSIGNOR OF ONE-FOURTH TO JOSEPH RAMSEY, 0F PITTSBURG, PENNSYLVANIA, AND ONE-FOURTH T'O EMIL BURCIK AND ONE-FOURTH T0 WILLIAM STARK, OF KNOXVILLE, PENNSYLVANIA.

v SHEET-EMBOSSING MILL.

Specication oi Letters Patent.

Application filed November 1, 1909. Serial No. 525,704.

To all whom "it may concern:

Be it known that I, VICTOR CHARTENER,

a citizen of the United States, residing atof pyramidal or analogous projections. B

my improvements I am able to make suc projections with-perfect surfaces and without injury to the sheets.

I do not restrict myself to the treatment of metal sheets, as obviously, I may emboss sheets composed of various substances; in fact, I can takel plastic colloid, or analogous substances and form therefrom emboed sheets.

Referring to theaccompanying drawings, Figure l is a vertical cross-section ofthree rolls arranged and constructed to form a plain sheet into one having rows of py` ramdal bosses, the housings and driving aparatus beingcomitted; Fig. 2, a plan of `ig. 1, showlng the rolls intergeared; Fig; 3, a perspective of a sheet when acted .on by the rolls 1 and 2 only; Fig. 4, a perspective of avfnished sheet as it appears after passing through the rolls 1- and 2, and 2 and 3; Fig. 5, avertical section showing Fig. 1inverted, and a platen substituted for the roll 2; Fig. 6, a plan of Fig. 5.; and. Fig. 7, a.

section similar to Fig. 1, but .with the ro1l 2 duplicated, the'roll 2 coperating first with the roll 1 and then, .by exchange of rolls, with the roll 3.

Referring irst to Figs. 1 to 4, 1 designates a roll provided with annular parallel V-shaped corrugations or with alternate annular V-shaped parallel grooves and ridges at right angles to the axis of the roll.

2 is a roll which may be considered to be corrugatedboth longitudinally and transversely, the square areas formed by the two series of corrugations having their sides tapered to a point ,so as to constitute pyramids. The roll 2 may be described as having its surface provided with pyramidal bosses arranged in straight rows parallel with the axis of the roll and also in. annular rows at right angles to the said axis.

3 is a roll provided with V-shaped corrugations, or V-shaped grooves and ridges parallel with. each other and the axis of the roll.

The rolls 1, 2, and 3 are arran ed, as viewed in cross-sect-ion (Fig.`1), wit their axes at the three corners of a triangle, the

roll 2 being at the upper angle, and the two rolls 1' and 3 havingltheir axes in the same Patented Sept. 6, 1910. y

horizontal plane and at the-other two corners of the triangle. The axis of the roll 2 is parallel with the axes of the rolls 1 and 3.

The rolls 1 and 2 have the annular grooves and ridges of the one cooperating with the annular ridges and grooves, respectively, of the other. The rolls 2 and 3 have the longitudinal grooves and ridges of the one cooperating with the lon itudinal ridges and grooves, respectively, o? the other.

'Ihe direction of rotation of the lrolls is shown by the arrows on Fig. 1. On Fig. 2, I have shown the roll 1 provided with the spur-gear 4 which meshes with the spurgear 5 on the roll 2, the latter spurear meshing with the .spur-gear 6 on the rol 3.

vThe sheets are usually made-of thin mahand pressure to take the position shown to the right of the rolls on Fig. 1, but the sheet `may issue at any angle from the rolls without departing from' the principles of my invention.

7 represents a sheet having the portion 8 y formed `with longitudinal corrugations, as

shown in Fig. Band the portion 9 with the g pyramidalbossea'as shown in Fig. 4. The portion 8 is formed between the rolls 1 and 2; and the portion 9, betweenthe rolls .2y and. 3, as shown inFlg. 1.v The process is continuous.

I Referring now to Figs. 5 and 6, the v.parts are the same as in Fig. 1, except that the parts have b een inverted or rotated 180 degrees and the rolls 2 have been developed or ormed into the platen 2. The sheet 7 is laid on the platen with the entering endof the sheet at the right of the roll 1. The platen with thesheet thereon is pushed rst Aterialwhich may readily be' bent by slight zal points.

beneath the roll 1 and then beneath the rcll 3. It is clear that the result will be as with the three rolls of Fig. 1. Fig. 5 shows the roll 1 forming the part 8 of the sheet which is like the part 8 of the sheet 7 When the part 8 passes beneath the roll 3, it will then be like the sheet shown on Fig. 4.

Fig. 7 may be considered'from two View First, it .may be regarded as showin the rolls 1 and 3 each cooperating with a ro l 2; or second, it may be regarded as showing in succession the roll 2 cooperating with the roll 1 and with the roll 3, the latter having been substituted for the roll 1.

If a sheet be fed from left to right .through the two pairs of rolls shown in Fig.

7, the result would be the same as that secured by the other two forms of my invention. In the other aspect of Fig. 7, the sheets may be fed first between the rolls 1 and 2. Then the roll 3 is substituted for the roll 1 and the sheets longitudinally corrugated by the rolls 1 and 2 are fed through the rolls 2 and 3. The iinished article is again the same as that shown in Fig. 4.

I have shown a few ways by which I am enabled to make embossed sheets corrugating the sheets in two directions, but I do not desire to be restricted to the precise mechanism shown and described as there are obviously many Ways of arriving at the same or analogous results without departing from the spirit of my invention.

l do not restrict myself to pyramidal bosses as the bosses may have other shapes, as cones, frustums, and the like.

Sheets of metal, paper, or plastic material may be fed through my apparatus, and of desired masses in bulk can be fed throu h the same, sheets being simultaneous y formed and embossed.

l claim- 1. In a sheet forming machine, a die having its surface bearing coniigurations like the finished article, a second die coperating with the first die and having its surface bearing the conguration of the finished article in 'one directicn, and av third die cooperating with the first die and having its surface bearing configuration extending cross the configurations made by the second 2. In a sheet forming machine, a die hav! ing intersecting grooves, a second die coperating therewlth and having ribs adapted to the grooves which run in one direction, and a third die coperating with the first die and having ribs adapted to the grooves which cross the last named grooves.

Signed at Pittsburg, Pa., this 29th day of October, 1909.

VICTOR CHARTENER. 

